Hebrews 6:12

"that you may not be sluggish." And this is also for their healing; for it leads them to the future time.And although he said above, "You have become sluggish," (Heb. 5:11) he then said to their listening ears, "but now, all of you have become …

Why then did we say these things? "But we desire that everyone of you do show the same diligence to the full assurance of hope unto the end; that ye be not slothful, but followers of them who through faith and patience inherit the promises." "We desire," he says, and we do not therefore merely labor for, or even so far as words go, wish this. But what? "We desire" that ye should hold fast to virtue, not as condemning your former conduct (he means), but fearing for the future. And he did not say, 'not as condemning your former conduct, but your present; for ye have fainted, ye are become too indolent'; but see how gently he indicated it, and did not wound them. For what does he say? "But we desire that every one of you do show the same diligence unto the end." For this is the admirable part of Paul's wisdom, that he does not expressly show that they "had" given in, that they "had" become negligent. For when he says, "We desire that every one of you" - it is as if one should say, I wish thee to be always in earnest; and such as thou wert before, such to be now also, and for the time to come. For this made his reproof more gentle and easy to be received. And he did not say, "I will," which would have been expressive of the authority of a teacher, but what is expressive of the affection of a father, and what is more than "willing," "we desire." All but saying, Pardon us, even if we say what is distasteful. "We desire that every one of you do show the same diligence to the full assurance of your hope unto the end." Hope (he means) carries us through: it recovers us again. Be not wearied out, do not despair, lest your hope be in vain. For he that worketh good hopeth also good, and never despairs of himself. "That ye may not become dull." Still "become"; and yet he said above, "seeing ye are become dull of hearing." (c. v. […]

"But followers" (he says) "of them, who through faith and patience inherit the promises." And who they are, he tells afterwards. He said before, "Imitate your own former well-doings." Then, lest they should say, What? He leads them back to the Patriarch: bringing before them examples of well-doing indeed from their own history, but of the thought of being forsaken, from the Patriarch; that they might not suppose that they were disregarded and forsaken as worthy of no account, but might know that it is [the portion] of the very noblest men to make the journey of life through trials; and that God has thus dealt with great and admirable men. Now we ought (he says) to bear all things with patience: for this also is believing: whereas if He say that He gives and thou immediately receivest, how hast thou also believed? Since in that case this is no longer of thy faith, but of Me, the Giver. But if I say that I give, and give after an hundred years, and thou hast not despaired; then hast thou accounted Me worthy to be believed, then thou hast the right opinion concerning Me. Thou seest that oftentimes unbelief arises not from want of hope only, but also from faintheartedness, and want of patience, not from condemning him who made the promise.

309. – Then when he says, so that you may not be sluggish, he indicates the danger, which is laziness. For laziness is the fear of a future good action, because one fears that he may fail or not repent: 'The slothful man says: There …

And this is for their consolation: for he refers this to the future time. And although above he said: "because you have become dull of hearing" (Heb. 5:11): for up to this point he was indicating the dullness of hearing; but now, he says, I …